Carbon-holder for arc-lig hts



( No Model.)

0. S. MOSS.

CARBON HOLDER FOR ARC LIGHTS. No. 591,486.

Patented Oct. 12, 1897.

INVENTOR Qatar 5.77205;

' ATTORNEYS.

WITNESSES: 6 71; J V

UNITED STATES I ATENT FFlQE.

OSCAR S. MOSS, OF SYRACUSE, NEXV YORK.

CARBON-HOLDER FOR ARC-Lie HTS.

SPECIFICATION formingpart of Letters Patent No. 591,486, dated October12, 1897.-

Application filed January 28, 1897. 'Serial No. 621,054. (No model.)

- nection with the accompanying drawings, is

a full, clear, and exact description.

This invention relates to improvements in carbon-holders for electriclamps. I

My object is to produce a carbon-holder which will automatically centerthe carbon when, for instance, the same is warped or crooked, so that itwill be impossible to get out of alinement with the carbon in the lowerholder; also one-in which as many parts' as possible of the upper andlower holders are interchangeable, for I have found by practicalexperience a great deal of difficulty is experienced in maintaining thetrim of the lamp, for the reason that if it is not trimmed straight-thatis, if the two carbons are not held in alinement when the machineflashes or the current is temporarily offtl1e upper carbon will slip bythe lower one to such an extent that the automatic mechanism pro videdfor raising it will be unable to lift it sufficiently to start again,and it will therefore be necessary to require the attention of theattendant before it can again be used; and to that end my inventionconsists in the several new and novel features of construction andoperation hereinafter described, and which are specifically set forth inthe claims hereunto annexed. It is constructed as follows, referencebeing had to the accompanying drawings, in which- Figure 1 shows a sideview of the lower part of an electric lamp, showing my improvedcarbon-holder. Fig. 2 is a vertical section on line X X, Fig. 1. Fig. 3is atop plan view of the upper-carbon holder. Fig. 4 is a top plan viewof the lower-carbon holder. Fig. 5 is an outside view of the bracketwhich supports the lower-carbon holder. Fig. 6 is a top view of thelower supporting-bracket. Fig. 7 is a view of the clamp which holds thecarbon and the holder together. Fig. 8 is an inner View of the top ofthe upper holder. Fig. 9 is a View of the outer face of theinterchangeable side pieces.

Similar letters and figures of reference indicate corresponding parts.

a are the vertical standards of the holder, having a cross-piece Z7 atthe lower end and in which there is a central opening I), through whichthe lower carbon may pass.

Referring now to the upper-carbon holder, 0 isa body having a threadedopening in the top 0 for reception of the lamp-rod and extendinglaterally, as shown at d, for the purpose of affording a shield orhousing for the clamp and terminating in a projection 01, having itsinner face convexed, as shown at f in Fig. 8.

e is a side piece having one face concaved and adapted to receive thecarbon e, the opposite side being provided with a concaved surface f,adapted to engage with the convexed bearing f upon the inner edge of thetoppiece c. g is a ring having a threaded opening upon one side adaptedto receive a thumb-screwy, the whole forming a clamp to hold the carbonand side pieces e to the lower extremity of the top piece 0. The sidepieces 6 are provided with laterally-extendin g lugs h, so as to preventthem from slipping down below the ring g, and the lower extremity isprovided with lugs h for the purpose of holding the ring g in position.

Referring now to the lower holder, lis a bracket constructedsubstantially as shown, having a projecting top 2, forming a housing, aconvexed inner face 33, forming a bearing for the concaved side f of theside piece, and the lower projecting T-foot.

5 is a V-shaped bracket constructed substantially as shown and having athreaded 7. The'bracket 5 rests upon the T-shaped foot 4, as shown inFig. 1, embracing the lower carbon, and thumb-screw 7 engages with thecross-bar 19, thereby holding the bracket 1 in the position shown in thedrawings. The clamp holds the parts together the same as shown in theupper holder.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s

1. A carbon-holder comprising atop adapted to receive a lamp-rod, andhaving an inner convex bearingsurface, a side piece opening 6, adaptedto receive a thumb-screw having both faces concaved, one of which isadapted to engage with the carbon, and the other with the inner face ofthe top, and means for holding them and the carbon together.

2. A carbon-holder comprising a top adapted to receive a lamp-rod, andhaving a laterally-proj ectin ghonsin g, an inner convexbearing-surface, a side piece having both faces concaved, one of whichis adapted to engage with the carbon and the other with the inner faceof the top, and means for holding them and the carbon together.

3. A carbon-holder comprising a top adapted to receive a lamp-rod, andhaving a laterally-projecting housing, a lower extension provided Withlugs, said extension having an inner convex bearing-surface, a sidepiece having laterally-extending lug or lugs and both faces concaved,one of which is adapted to engage with the carbon and the inner face ofthe top, and means for holding them and the carbon together as setforth.

4. A carbon-holder comprising a bracket having a lower extending foot,and means for securing said foot to the cross-piece of the lamp, saidbracket having a portion of its upper inner face convexed, a side piecehaving its faces concave and adapted to engage with the carbon and theinner face of the bracket, and means for holding them and the carbontogether as set forth.

In Witness whereof I have hereunto set my hand this 18th day ofDecember, 1896.

OSCAR S. MOSS.

In presence of MARY A. FRANKLIN, HOWARD I. DENISON.

